Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes

Mikkel Juul Larsen, Yue Ma, Huan Qian, Hans Toftlund Nielsen, Peter Brilner Lund, Eivind Morten Skou

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

Abstrakt

This presentation concerns the stability of radicals generated in poly(ethylene-alt-tetra­fluoro­ethylene) (ETFE) film by electron irradiation prior to grafting of styrene onto this base material. It has been demonstrated that the grafting yield decreases as the storage time of the irradiated film increases, and by ESR this has been shown to be due to decay of the polymerization-initiating radicals in the film material. The decay rate is found to depend on the storage temperature, and it may also depend on the type of radicals present in the film. Furthermore the conducted investigations have shown that the radicals are almost entirely consumed in the grafting process.
OriginalsprogEngelsk
Publikationsdato2008
Antal sider1
StatusUdgivet - 2008
Begivenhed14th International Conference on Solid State Protonic Conductors - Kyoto, Japan
Varighed: 7. sep. 200811. okt. 2008
Konferencens nummer: 14

Konference

Konference14th International Conference on Solid State Protonic Conductors
Nummer14
LandJapan
ByKyoto
Periode07/09/200811/10/2008

Emneord

  • Radikaler, peroxyradikaler, radikalstabilitet, radikallevetid, ESR, EPR, elektronbestråling, fluorpolymer, brændselscelle, membran, podning, polystyren

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